Why Don't Identical Twins Have the Same Fingerprints?

💡 The Answer

• Identical twins share the same DNA but their fingerprints are always unique to each individual.
• Environmental factors inside the womb — like umbilical cord length and position — shape fingerprint patterns.
• The rate of finger growth during development also creates subtle differences in ridge formation.
• This means fingerprints are determined by physical development, not genetics alone.